HI recently, I came 2 know that X800pro can be converted into X800XT by a BIOS upgrade. The same was heard 4 FX5900/5900XT 2 b converted 2 FX5900Ultra. Will u plz go in detail about what actually can happen by a Video Bios upgrade. I mean 2 say the performance increase and how 2 do it 4 different brands ie ATi, nVidia. AND PLZ ALSO MENTION THE PRECAUTIONS 2 B TAKEN.